I am about to purchase a 35HP Mudbuddy surface drive on a 1754 gator trax which needs a new prop. Is this prop threaded like a beavertail longtail prop or does it just slide onto the prop shaft?

Also, I mostly hunt hard bottom sandy areas....what are the oppinions performance wise between a three bladed prop and a two bladed prop?

Thanks for any input!

2 blade... depend on year model but most of the new motors are hex shaft with a Nylock nut.